21791860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57347}}^1$

素因数の和:57375

約数の個数: 24

約数和(自身を含む): 48172320

約数和(自身を除く): 26380460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57347, 114694, 229388, 286735, 573470, 1089593, 1146940, 2179186, 4358372, 5447965, 10895930, 21791860]

約数ペア:

[(1, 21791860), (2, 10895930), (4, 5447965), (5, 4358372), (10, 2179186), (19, 1146940), (20, 1089593), (38, 573470), (76, 286735), (95, 229388), (190, 114694), (380, 57347)]